Metiram Uses Control of a wide range of diseases on many crops, e.g. scab on pome fruit; shot-hole on stone fruit; rust on currants and plums; downy mildew, red fire disease and black rot on vines; Phytophthora late blight on potatoes and tomatoes; Septoria leaf spot on celery and celeriac; downy mildew on head lettuce; rust on asparagus; anthracnose on beans; downy mildews on hops and tobacco; downy mildews and rusts on ornamentals; diseases of cotton, peanuts, pecans, etc. Application rates in the range 1.5-4.0 kg/ha. Used in forestry to combat needle cast in conifers. Also used as a seed treatment for control of emergence diseases of vegetables and ornamentals.